各种研究表明，三个因素——过滤介质、温度和反冲洗水中氯的存在——会影响饮用水生物过滤器的性能。然而，在以前的研究中，这些因素的影响以及它们之间潜在的重要相互作用尚未进行定量比较。特别是，关于低温（5摄氏度）下生物过滤器性能的可用信息非常有限。在这项生物过滤的实验室规模研究中，作者发现介质（无烟煤与颗粒活性炭[GAC]）、温度以及反洗水中氯的存在/不存在都是影响可生物降解有机物（BOM）去除的重要因素。 然而，只有在所有因素都处于最不利的情况下，才能看到绩效的大幅下降。氯和低温的组合对GAC过滤器的影响很小。在高温或低温条件下，反冲洗水中的氯胺基本上不会影响BOM的去除。一般来说，在高温（20摄氏度）下运行的生物过滤器需要20到40天的时间，才能持续去除最容易生物降解的化合物。这项研究的结果表明，生物过滤器在低温下可以很好地去除易生物降解的化合物，例如许多臭氧氧化副产物。 在5摄氏度时，GAC过滤器受到反洗水中氯的轻微影响。然而，当无烟煤过滤器在如此低的温度下运行时，氯化反冲洗水对获得的结果是有害的。包括38个参考文献、表格、图表。

Various studies have shown that three factors - filter media, temperature, and the presence of chlorine in the backwash water - affect the performance of drinking water biofilters. However, the effects of these factors and the potentially significant interactions among them have not been compared quantitatively in previous studies. In particular, there is very limited information available on the performance of biofilters at low temperature (5 degrees C). In this bench-scale study of biological filtration, the authors found that media (anthracite versus granular activated carbon [GAC]), temperature, and the presence/absence of chlorine in the backwash water were all important factors affecting the removal of biodegradable organic matter (BOM). However, a substantial impairment of performance was only seen when all factors were at their most unfavorable settings. The combination of chlorine and low temperature had only a minor effect on GAC filters. Chloramine in the backwash water did not substantially affect BOM removal at either high or low temperature. In general, a period of 20 to 40 days was required for the biofilters operated at the high temperature (20 degrees C) to reach constant removal of the most easily biodegradable compounds. The results of this study show that biofilters can perform well at low temperatures in removing easily biodegradable compounds, such as many ozonation byproducts. At 5 degrees C., GAC filters were slightly affected by chlorine in the backwash water. However, chlorinated backwash water is detrimental to the results obtained when anthracite filters are operated at this low temperature. Includes 38 references, tables, figures.